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A321415 as a simple table

n a(n)
1 0
2 2
3 2
4 10
5 2
6 64
7 2
8 330
9 1028
10 2010
11 2
12 24216
13 2
14 77528
15 964696
16 490314
17 2
18 11437750
19 2
20 21390330

[0,2,2,10,2,64,2,330,1028,2010,2,24216,2,77528,
 964696,490314,2,11437750,2,21390330]

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Last modified March 6 04:38 EST 2021. Contains 341841 sequences. (Running on oeis4.)